Diagnostic test card



FIG. 1 is a front view of a diagnostic test card showing my new design;

FIG. 2 is a rear view of thereof;

FIG. 3 is a first end view thereof;

FIG. 4 is a second end view thereof;

FIG. 5 is a first side view thereof; and,

FIG. 6 is a second side view thereof. 

The ornamental design for diagnostic test card, as shown and described. 